Question

if 7 key chains cost $55.65, then 12 key chains cost?

Answer 1

If 7 key chains cost $55.65, then 12 key chains cost?

**Solution:**

Assume that 12 key chains cost $x. We can write the proportion

$$\frac{x}{12} = \frac{55.65}{7}$$ $$x = \frac{12}{7} * 55.65$$ $$x = 95.4$$

**Answer:** 12 key chains cost $95.4